feat: Add quotedKeys option to all converters, fixes #9

[dobromir-hristov]

Description

This PR allows you to pass an optional quotedKeys parameter, to both CLI and Node API.

This should convert all map keys to quoted values, for SASS, SCSS and Stylus.

tailwindcss-export-config --config=tailwind.config.js --destination=tailwind-variables --format=scss --quoted-keys=true

$fontFamily: (
  "display": (Gilroy,sans-serif),
  "body": (Graphik,sans-serif),
);

$colors: (
  //... other vars
  "pink-700": #b83280,
  "pink-800": #97266d,
  "pink-900": #702459,
  "cyan": #9cdbff,
);

resolves #9

[mpalpha]

Works for me. I would rather have all keys handled the same way like this since it is considered a best practice, and I would be able to use the same logic for all key names within loops.